Design Envelope 4200H Split-Coupled Horizontal End-Suction Pumps

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Design Envelope 4200H Split-Coupled Horizontal End-Suction Pumps

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Design Envelope 4200H Split-Coupled Horizontal End-Suction Pumps - Isometric view
Design Envelope 4200H Split-Coupled Horizontal End-Suction Pumps - Line drawing

  • Summary
  • Applications

    HVAC-system pumping and control; general purpose pumping; industrial/ process pumping and control (water or glycol based)

  • Description

    Base mounted end-suction horizontal pumping unit with integrated intelligent controls for easier installation and superior energy performance. Saves up to 75% in energy over comparable traditional constant speed or variable frequency operated pump installations

  • Materials
    • Cast-iron or ductile iron casing
    • Bronze impeller
    • Sintered silicon carbide mechanical seal
  • Configuration

    On-board Intelligent Variable Speed controls with Sensorless control. Split-coupling design and outside balanced. Controls enclosure UL type 12 for indoor applications. Supplied with NEMA premium TEFC motors

  • Performance range

    25 to 4500 USgpm (1.5 to 283 L/s) flow; 10 to 400 ft (3 to 121 m) head (composite curves available)

  • Temperature

    300oF (150oC)

  • Power Range

    1 hp to 125 hp (0.75 kW to 90 kW)

  • Size

    1.5" to 8” discharge (40 mm to 200 mm)

Lowest installed cost

  • Integrated intelligent controls eliminate separate mounting of variable frequency drive (VFD) as well as procurement, installation (incl. wiring), calibration and upkeep of differential pressure sensor
  • Expertly staggered product line for perfect pump match-up and selection especially in retrofit situations
  • Superior energy performance qualifies for significant cost recovery under utility and government rebate programs
  • Design Envelope selections frequently recommend a no-risk smaller motor and/or pump which reduces installed cost.
Design Envelope

Lowest installed cost. Lowest operating cost.


Lowest operating cost

  • Integrated intelligent controls – combined with perfect component match-up and tuning – for up to 75% in energy savings over traditional constant speed and variable frequency operated pump installations
  • Split-coupling design for easy seal service without removal of pump or motor
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Lowest environmental cost

  • 75% decrease in energy consumption reduces operational greenhouse gas emissions at equal ratio
  • Equipment downsizing mitigates environmental impacts associated with procuring unnecessarily large equipment
  • Integrated design packs and ships more economically for less packaging waste compared to loose component shipping and assembly



Lowest project and operating risk

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U.S.A. Utility Energy Rebate Info.

Design Envelope Pumps - solution outline

Design Envelope single-phase power supplement

Design Envelope Horizontal Pump supplement

Armstrong Design Envelope - FAQs

Armstrong Horizontal Design Envelope - FAQs

Armstrong Design Envelope Generation 3 - FAQs

Variable frequency drives and the use of bypasses - fact sheet

Boiler Re-Circulation Pumps & other traditional Constant flow applications - white paper

Submittals (with touch screen)


Submittals (single-phase)




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